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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
131

Optimalizace technologie fotostimulace pro oddálení pohlavní zralosti u sivena amerického (Salvenilus fontinalis) / Optimalization of photostimulation technology for delay sexual maturity of brook trout (Salvenilus fontinalis)

JUNG, Jakub January 2016 (has links)
The aim of the present work, based on two experiments, was to evaluate the impact of photostimulation as a prevention for delaying the sexual maturation of brook trout (Salvenilus fontinalis). Another additional experiment was to describe which effect has photostimulation on the consequences of aggressive behaviour of males. Two experimental groups were established and differed in illumination sources: the metal halide lamps (HAL) and the light emitting diodes (LED). The photostimulation timing (photoperiod) was tested in following experiment. In both tested groups (HAL and LED) the photoperiod was prolonged to 18L:6D in comparison to the control group with natural photoperiod. The results shows that before spawning females and males in both tested groups (HAL and LED) reached significantly higher body weight up to 100 g (=0.05) due to desirable delayed sexual maturation (up to one month). By obtaining the same results in both groups, clearly profitable source of illumination was LED and the time for sufficient application before spawning was 67 days. Moreover photostimulation had also positively reflected in the elimination of aggressive behaviour of males. The results of the present study suggest that photostimulation may be applicable in the intensive culture systems of salmonids in the Czech Republic.
132

Kvantifikace vlivu srážko-odtokových událostí na celkové odnosy živin z povodí / Quantification of the impact of rainfall-runoff events on nutrient loads from the watershed

STREITOVÁ, Eva January 2016 (has links)
This diploma thesis deals with clarification of an influence of rain discharge events on nutrients loss from drainage area and which rain discharge events are the main cause of the loss. Within the scope of this the influence of these episodes on drainage area of the Jenínský brook will be quantified, more specifically sub-drainage area J2. The thesis describes not only the circle of water in the nature, specification of rain drainage events origin, but also the very factors which influence the water drainage and the loss of nutrients caused by the drainage. Furthermore, the basic nutrients which appear the most often and in the biggest quantities in our waters are described, these being nitrogen and phosphor and last but not least what is described here is the total loss of nutrients in water during rain drainage events. The description of a drainage area itself and a water intake profile J2 follows. The water intake profile J2 was the source for processing the results. The results were processed by several computational methods, which were compared to each other in the end. The loss during 5 extreme rain events was calculated and so was their percentage representation in the total annual losses and the consecutive evaluation of the results.
133

Análise das fragilidades ambientais da sub-bacia hidrográfica do Arroio Santa Isabel, RS

Marth, Jonathan Duarte January 2012 (has links)
O estudo consistiu em uma pesquisa ambiental visando o mapeamento e análise das fragilidades do ambiente na Sub-bacia Hidrográfica do Arroio Santa Isabel (SbHASI), baseando-se na metodologia de Ross (1994). A Bacia situa-se na região sul do Rio Grande do Sul, nos municípios de São Lourenço do Sul e Cristal, com uma área de aproximadamente 294 km², essencialmente relacionada às atividades do espaço rural. Nesta região são comuns as inundações decorrentes de precipitações acumuladas e eventos extremos, além de processos erosivos decorrentes de características do ambiente e do uso intenso dos solos através de atividades como agricultura e pecuária. A análise ambiental dividiu-se em diferentes etapas: caracterização de elementos do meio físico no âmbito regional; mapeamento e caracterização das principais unidades geológicas; mapeamento geomorfológico (padrão de formas semelhantes); análise das características pedológicas e mapeamento dos solos; resgate e análise do processo histórico de ocupação da área de estudo e arredores; análise da evolução da cobertura vegetal e usos da terra através de imagens de satélite dos anos de 1987, 1995 e 2010. A área de estudo está inserida em duas unidades morfoesculturais do RS: a morfoescultura Planalto Uruguaio Sul-rio-grandense constituída de rochas do pré-cambriano, tendo um relevo colinoso, com altitude máxima de 205 m, composto principalmente por Argissolos e Neossolos; a morfoescultura Planície e Terras Baixas Costeiras é constituída por sedimentos quaternários da Planície Costeira, esta possui baixas declividades e é composta basicamente por Planossolos e Gleissolos. A ocupação da área de estudo está diretamente relacionada ao relevo, tendo sido ocupada primeiramente pelos portugueses, nas áreas de planície através do sistema de sesmarias, adquirindo grandes propriedades, que hoje estão associadas ao plantio de arroz e soja e à pecuária. Em um segundo momento de ocupação (a partir de 1850), os imigrantes Pomeranos adquiriram pequenas propriedades nas áreas do planalto, que atualmente está associada ao plantio de fumo, de milho e agricultura de subsistência. Ao final da pesquisa dividiu-se a área de estudo em sistema de vertentes e interflúvios e em sistema fluvial, para entendimento das fragilidades referentes à erosão e inundação respectivamente. No setor de vertentes e interflúvios foram encontradas três classes hierárquicas de fragilidade: Fraca (34,26%), média (61,26%) e forte (4,51%). No sistema fluvial foram encontradas cinco classes hierárquicas de fragilidade: muito fraca (21,52 %), fraca (4,43 %), média (35,56 %), forte (13,39 %) e muito forte (25,10 %), sendo constatada influência antrópica nas fragilidades de ambos os sistemas. A metodologia demonstrou ser um importante instrumento de ordenamento territorial, condizendo com a realidade encontrada nos trabalhos de campo. / This study consisted of an environmental research aiming at mapping and analysis of the weaknesses of the sub-watershed of the Santa Isabel brook (SbHASI), based on Ross methodology (1994). The watershed is located in the Rio Grande do Sul- RS southern region, at São Lourenço do Sul and Cristal counties, with a totally rural area of about 294 km². Floods due to extreme events and accumulated rain are very common in this region, adding erosive processes due to environmental characteristics and from the intensive soil usage through agriculture and livestock activities. The environmental analysis were divided in different stages: characterization of the regional physical medium; mapping and characterization of the main geological units; geomorphological mapping (similar shape pattern); pedological characteristics analysis and soil mapping; recovery and analysis of the historical process of occupation of the study area and vicinity; analysis of the evolution of land cover and land usage through satellite images of the years 1987, 1995 and 2010. The studied area is included in two morfosculptural units from RS. The Uruguaio Sul-rio-grandense plateau is made of precambrian rocks, with a hilly topography, and a 205 m maximum height, composed basically by Argisols and Neosols. The morfosculpture Plain and coastal lowland is made of quaternaries sediments from Coastal plain, presenting low declivity and composed by planosols and gleysols. The studied area occupation is directly related to the topography, had been first occupied by the portugueses, in the plain areas through the sesmarias system, acquiring large properties, which today are associated with the planting of rice and soybeans, and livestock. In a later occupation (from 1850), the Pomerans immigrants acquired small holdings in the areas of the plateau, which is currently associated with the planting of tobacco, corn and subsistence agriculture. At the end of the study the area were divided into slope and interfluves system and waterway system, to understand the weakness related to erosion and flood respectively. In the slope and interfluves sector three hierarchical classes of frailty were found: Weak (34,26%), medium (61,26%)and strong (4,51%). In the fluvial system five hierarchical classes of frailty were found: very weak (21,52 %), weak (4,43 %), medium (35,56 %), strong (13,39 %) and very strong (25,10 %), and found human influence on the weaknesses of both systems. The methodology proved to be an important tool for land use, consistent with the reality in the field.
134

Výskyt mihule potoční (Lampetra planeri ) v Malši v okolí Kaplice / The occurrence of brook lamprey (\kur{Lampetra planeri })in the Malše River near Kplice

BRABCOVÁ, Miroslava January 2010 (has links)
Within the frame of the ichthyological survey of the Malše River in Dolní Dvořiště and several river profiles upstream the Kaplice town the presence of brook lamprey (Lampetra planeri) was proved. In years 2007-2009 in six localities of the Malše River between Dolní Dvořiště and Kaplice town the occurrence of the species was proved. Lamprey larvae created more than 90%, catch of adult lampreys was low. In time period investigated the densities were relatively low (8 inds./m2 maximally) and were not significantly different between compared years and localities sampled. Lampreys densities were influenced by current speed and rate of shade. Physical {--} chemical parameters of water (temperature, pH, oxygen concentration, conductivity) and also water depth and thickness of sediment were in the range of optimal values in the sampled microhabitats so any correlations between these parameters and densities of lampreys were not observed.
135

Výskyt mihule potoční (Lampetra planeri) v Malši v okolí Dolního Dvořiště / Characteristic of brook lamprey \kur{(Lampetra planeri)} habitats in the Malše River catchment

HLAVÍNOVÁ, Lenka January 2010 (has links)
The aim of the present diploma thesis was to prove the habitation of brook lamprey near Dolní Dvořiště. Biotopes with habitat preferences of brook lamprey were described. During the ichtological investigation of the catchment area of the Malše river in the years 2007 - 2008, brook lamprey was successfully located on sites in Dolní Dvořiště and near Všeměřický quarry. The sites had the same character as trout streams. Length -frequency distribution of the brook lamprey larvae was executed. The species assemblage of ichtofauna of the sites with brook lamprey habitation was described. In the years 2008-2009 other possible biotopes were mapped in connection to the sites in Malše and Tichá where brook lamprey had been located before.
136

Análise das fragilidades ambientais da sub-bacia hidrográfica do Arroio Santa Isabel, RS

Marth, Jonathan Duarte January 2012 (has links)
O estudo consistiu em uma pesquisa ambiental visando o mapeamento e análise das fragilidades do ambiente na Sub-bacia Hidrográfica do Arroio Santa Isabel (SbHASI), baseando-se na metodologia de Ross (1994). A Bacia situa-se na região sul do Rio Grande do Sul, nos municípios de São Lourenço do Sul e Cristal, com uma área de aproximadamente 294 km², essencialmente relacionada às atividades do espaço rural. Nesta região são comuns as inundações decorrentes de precipitações acumuladas e eventos extremos, além de processos erosivos decorrentes de características do ambiente e do uso intenso dos solos através de atividades como agricultura e pecuária. A análise ambiental dividiu-se em diferentes etapas: caracterização de elementos do meio físico no âmbito regional; mapeamento e caracterização das principais unidades geológicas; mapeamento geomorfológico (padrão de formas semelhantes); análise das características pedológicas e mapeamento dos solos; resgate e análise do processo histórico de ocupação da área de estudo e arredores; análise da evolução da cobertura vegetal e usos da terra através de imagens de satélite dos anos de 1987, 1995 e 2010. A área de estudo está inserida em duas unidades morfoesculturais do RS: a morfoescultura Planalto Uruguaio Sul-rio-grandense constituída de rochas do pré-cambriano, tendo um relevo colinoso, com altitude máxima de 205 m, composto principalmente por Argissolos e Neossolos; a morfoescultura Planície e Terras Baixas Costeiras é constituída por sedimentos quaternários da Planície Costeira, esta possui baixas declividades e é composta basicamente por Planossolos e Gleissolos. A ocupação da área de estudo está diretamente relacionada ao relevo, tendo sido ocupada primeiramente pelos portugueses, nas áreas de planície através do sistema de sesmarias, adquirindo grandes propriedades, que hoje estão associadas ao plantio de arroz e soja e à pecuária. Em um segundo momento de ocupação (a partir de 1850), os imigrantes Pomeranos adquiriram pequenas propriedades nas áreas do planalto, que atualmente está associada ao plantio de fumo, de milho e agricultura de subsistência. Ao final da pesquisa dividiu-se a área de estudo em sistema de vertentes e interflúvios e em sistema fluvial, para entendimento das fragilidades referentes à erosão e inundação respectivamente. No setor de vertentes e interflúvios foram encontradas três classes hierárquicas de fragilidade: Fraca (34,26%), média (61,26%) e forte (4,51%). No sistema fluvial foram encontradas cinco classes hierárquicas de fragilidade: muito fraca (21,52 %), fraca (4,43 %), média (35,56 %), forte (13,39 %) e muito forte (25,10 %), sendo constatada influência antrópica nas fragilidades de ambos os sistemas. A metodologia demonstrou ser um importante instrumento de ordenamento territorial, condizendo com a realidade encontrada nos trabalhos de campo. / This study consisted of an environmental research aiming at mapping and analysis of the weaknesses of the sub-watershed of the Santa Isabel brook (SbHASI), based on Ross methodology (1994). The watershed is located in the Rio Grande do Sul- RS southern region, at São Lourenço do Sul and Cristal counties, with a totally rural area of about 294 km². Floods due to extreme events and accumulated rain are very common in this region, adding erosive processes due to environmental characteristics and from the intensive soil usage through agriculture and livestock activities. The environmental analysis were divided in different stages: characterization of the regional physical medium; mapping and characterization of the main geological units; geomorphological mapping (similar shape pattern); pedological characteristics analysis and soil mapping; recovery and analysis of the historical process of occupation of the study area and vicinity; analysis of the evolution of land cover and land usage through satellite images of the years 1987, 1995 and 2010. The studied area is included in two morfosculptural units from RS. The Uruguaio Sul-rio-grandense plateau is made of precambrian rocks, with a hilly topography, and a 205 m maximum height, composed basically by Argisols and Neosols. The morfosculpture Plain and coastal lowland is made of quaternaries sediments from Coastal plain, presenting low declivity and composed by planosols and gleysols. The studied area occupation is directly related to the topography, had been first occupied by the portugueses, in the plain areas through the sesmarias system, acquiring large properties, which today are associated with the planting of rice and soybeans, and livestock. In a later occupation (from 1850), the Pomerans immigrants acquired small holdings in the areas of the plateau, which is currently associated with the planting of tobacco, corn and subsistence agriculture. At the end of the study the area were divided into slope and interfluves system and waterway system, to understand the weakness related to erosion and flood respectively. In the slope and interfluves sector three hierarchical classes of frailty were found: Weak (34,26%), medium (61,26%)and strong (4,51%). In the fluvial system five hierarchical classes of frailty were found: very weak (21,52 %), weak (4,43 %), medium (35,56 %), strong (13,39 %) and very strong (25,10 %), and found human influence on the weaknesses of both systems. The methodology proved to be an important tool for land use, consistent with the reality in the field.
137

Análise das fragilidades ambientais da sub-bacia hidrográfica do Arroio Santa Isabel, RS

Marth, Jonathan Duarte January 2012 (has links)
O estudo consistiu em uma pesquisa ambiental visando o mapeamento e análise das fragilidades do ambiente na Sub-bacia Hidrográfica do Arroio Santa Isabel (SbHASI), baseando-se na metodologia de Ross (1994). A Bacia situa-se na região sul do Rio Grande do Sul, nos municípios de São Lourenço do Sul e Cristal, com uma área de aproximadamente 294 km², essencialmente relacionada às atividades do espaço rural. Nesta região são comuns as inundações decorrentes de precipitações acumuladas e eventos extremos, além de processos erosivos decorrentes de características do ambiente e do uso intenso dos solos através de atividades como agricultura e pecuária. A análise ambiental dividiu-se em diferentes etapas: caracterização de elementos do meio físico no âmbito regional; mapeamento e caracterização das principais unidades geológicas; mapeamento geomorfológico (padrão de formas semelhantes); análise das características pedológicas e mapeamento dos solos; resgate e análise do processo histórico de ocupação da área de estudo e arredores; análise da evolução da cobertura vegetal e usos da terra através de imagens de satélite dos anos de 1987, 1995 e 2010. A área de estudo está inserida em duas unidades morfoesculturais do RS: a morfoescultura Planalto Uruguaio Sul-rio-grandense constituída de rochas do pré-cambriano, tendo um relevo colinoso, com altitude máxima de 205 m, composto principalmente por Argissolos e Neossolos; a morfoescultura Planície e Terras Baixas Costeiras é constituída por sedimentos quaternários da Planície Costeira, esta possui baixas declividades e é composta basicamente por Planossolos e Gleissolos. A ocupação da área de estudo está diretamente relacionada ao relevo, tendo sido ocupada primeiramente pelos portugueses, nas áreas de planície através do sistema de sesmarias, adquirindo grandes propriedades, que hoje estão associadas ao plantio de arroz e soja e à pecuária. Em um segundo momento de ocupação (a partir de 1850), os imigrantes Pomeranos adquiriram pequenas propriedades nas áreas do planalto, que atualmente está associada ao plantio de fumo, de milho e agricultura de subsistência. Ao final da pesquisa dividiu-se a área de estudo em sistema de vertentes e interflúvios e em sistema fluvial, para entendimento das fragilidades referentes à erosão e inundação respectivamente. No setor de vertentes e interflúvios foram encontradas três classes hierárquicas de fragilidade: Fraca (34,26%), média (61,26%) e forte (4,51%). No sistema fluvial foram encontradas cinco classes hierárquicas de fragilidade: muito fraca (21,52 %), fraca (4,43 %), média (35,56 %), forte (13,39 %) e muito forte (25,10 %), sendo constatada influência antrópica nas fragilidades de ambos os sistemas. A metodologia demonstrou ser um importante instrumento de ordenamento territorial, condizendo com a realidade encontrada nos trabalhos de campo. / This study consisted of an environmental research aiming at mapping and analysis of the weaknesses of the sub-watershed of the Santa Isabel brook (SbHASI), based on Ross methodology (1994). The watershed is located in the Rio Grande do Sul- RS southern region, at São Lourenço do Sul and Cristal counties, with a totally rural area of about 294 km². Floods due to extreme events and accumulated rain are very common in this region, adding erosive processes due to environmental characteristics and from the intensive soil usage through agriculture and livestock activities. The environmental analysis were divided in different stages: characterization of the regional physical medium; mapping and characterization of the main geological units; geomorphological mapping (similar shape pattern); pedological characteristics analysis and soil mapping; recovery and analysis of the historical process of occupation of the study area and vicinity; analysis of the evolution of land cover and land usage through satellite images of the years 1987, 1995 and 2010. The studied area is included in two morfosculptural units from RS. The Uruguaio Sul-rio-grandense plateau is made of precambrian rocks, with a hilly topography, and a 205 m maximum height, composed basically by Argisols and Neosols. The morfosculpture Plain and coastal lowland is made of quaternaries sediments from Coastal plain, presenting low declivity and composed by planosols and gleysols. The studied area occupation is directly related to the topography, had been first occupied by the portugueses, in the plain areas through the sesmarias system, acquiring large properties, which today are associated with the planting of rice and soybeans, and livestock. In a later occupation (from 1850), the Pomerans immigrants acquired small holdings in the areas of the plateau, which is currently associated with the planting of tobacco, corn and subsistence agriculture. At the end of the study the area were divided into slope and interfluves system and waterway system, to understand the weakness related to erosion and flood respectively. In the slope and interfluves sector three hierarchical classes of frailty were found: Weak (34,26%), medium (61,26%)and strong (4,51%). In the fluvial system five hierarchical classes of frailty were found: very weak (21,52 %), weak (4,43 %), medium (35,56 %), strong (13,39 %) and very strong (25,10 %), and found human influence on the weaknesses of both systems. The methodology proved to be an important tool for land use, consistent with the reality in the field.
138

A conferência dos pássaros = reflexões sobre o ator narrador no teatro de Peter Brook = The conference of the birds: reflections on the actor narrator in the theatre of Peter Brook / The conference of the birds : reflections on the actor narrator in the theatre of Peter Brook

Castro, Ana Luiza de Magalhães 22 August 2018 (has links)
Orientador: Suzi Frankl Sperber / Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes / Made available in DSpace on 2018-08-22T15:30:43Z (GMT). No. of bitstreams: 1 Castro_AnaLuizadeMagalhaes_M.pdf: 7262821 bytes, checksum: 4bd587371f17e97a500d09d7d4d18cd2 (MD5) Previous issue date: 2012 / Resumo: Este estudo desenvolve uma reflexão sobre a presença da narrativa no teatro de Peter Brook. Compreendendo-a como resultante de sua pesquisa em direção à "qualidade" e à "vida" da cena. Da noção de narrativa, de cunho tradicional, deriva o conceito de experiência que dialoga com as premissas propostas por Brook para o seu teatro. O espetáculo "A Conferência dos Pássaros" foi escolhido para este estudo por apresentar plenamente a atuação narrativa no percurso do teatro de Peter Brook, conjugando, também, o saber desenvolvido pelo grupo, no primeiro ciclo de trabalho que se iniciou com a criação do Centro Internacional de Pesquisa Teatral - CIRT, em 1970 / Abstract: This work develops a reflection about the presence of narrative in the theater of Peter Brook. Understanding this presence as a result of his search toward the "quality" and "life" of the scene. From the notion of traditional narrative derives the concept of experience, that dialogue with the premises proposed by Brook for his theater. The play "The Conference of the Birds" was chosen for this study because it presents the fully narrative acting in the Peter Brook's theatre process. It combines the knowledge developed by the group in the first cycle of their work that began with the creation of CIRT - International Centre for Theatre Research in 1970 / Mestrado / Teatro, Dança e Performance / Mestra em Artes da Cena
139

Managing erosion, sediment transport and water quality in drained peatland catchments

Marttila, H. (Hannu) 04 January 2011 (has links)
Abstract Peatland drainage changes catchment conditions and increases the transport of suspended solids (SS) and nutrients. New knowledge and management methods are needed to reduce SS loading from these areas. This thesis examines sediment delivery and erosion processes in a number of peatland drainage areas and catchments in order to determine the effects of drainage on sediment and erosion dynamics and mechanics. Results from studies performed in peat mining, peatland forestry and disturbed headwater catchments in Finland are presented and potential sediment load management methods are discussed for drainage areas and headwater brooks. Particular attention is devoted to erosion of organic peat, sediment transport and methods to reduce the impacts of peatland drainage in boreal headwaters. This thesis consists of six articles. The first and second papers focus on the erosion and sediment transport processes at peat harvesting and peatland forestry drainage networks. The results indicate that in-channel processes are important in drained peatland, since the drainage network often constitutes temporary inter-storm storage for eroding and transporting material. Sediment properties determine the bed sediment erosion sensitivity, as fluffy organic peat sediment consolidates over time. As flashiness and peak runoff control sediment entrainment and transport from drained peatland areas, water quality management should include peak runoff management. The third, fourth and fifth papers studies use and application of peak runoff control (PRC) method to the peat harvesting and peatland forestry conditions for water protection. Results indicate that effective water quality management in drained peatland areas can be achieved using this method. Installation of the PRC structures is a useful and cost-effective way of storing storm runoff waters temporarily in the ditch system and providing a retention time for eroded sediment to settle to the ditch bed and drainage network. The main effect of the PRC is on SS and SS-bound nutrients. The sixth paper is concentrated to test new restoration structure to be used in degraded headwater brooks. The results show that addition of woody restoration structures to the channel is effective and simple sediment management methods in headwater areas. New information provided in this thesis on sediment erosion and transport processes in drained peatland areas can help to improve water quality control in these areas. In-channel processes are important for both peatland uses, since the drainage network often constitutes temporary inter-storm storage for eroding and transporting material. Therefore, controlling these processes is a key to effective water quality management, which can be achieved using the PRC method in drainage areas or by utilisation of natural fluvial processes in natural channels downstream.
140

Návrh revitalizace části Knínického potoka / Project of revitalization part of Kninicky brook

Vyplel, Adam January 2020 (has links)
The diploma thesis is focused on the proposal of systematic revitalization of the selected section of the Knínický brook in the cadastral area of Veverské Knínice. It is a straight, very deep channel due to technical adjustments in the past. The HEC-RAS program verifies the capacity of the channel for the Q100 flow. In this way, it was found that the channel has very high capacity so a new route with Q1 flow capacity was designed. Due to the height conditions, the design also included three boulder chutes. Subsequently, the vegetation accompaniment and bank stands were suitably supplemented.

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